Accuracy of radar-estimated precipitation in a mountain catchment in Slovakia
Author:
Sleziak Patrik1, Jančo Martin1, Danko Michal1, Méri Ladislav23, Holko Ladislav1
Affiliation:
1. Institute of Hydrology, Slovak Academy of Sciences , Dúbravská cesta 9, 841 04 Bratislava , Slovakia . 2. Slovak Hydrometeorological Institute , Jeséniova 17, 833 15 Bratislava , Slovakia . 3. Department of Astronomy, Physics of the Earth, and Meteorology , Comenius University in Bratislava , Mlynská dolina 842 48, Bratislava 4 , Slovakia .
Abstract
Abstract
Accurate estimation of precipitation in mountain catchments is challenging due to its high spatial variability and lack of measured ground data. Weather radar can help to provide precipitation estimates in such conditions. This study investigates the differences between measured and radar-estimated daily precipitation in the mountain catchment of the Jalovecký Creek (area 22 km2, 6 rain gauges at altitudes 815–1900 m a.s.l.) in years 2017–2020. Despite good correlations between measured and radar-based precipitation at individual sites (correlation coefficients 0.68–0.90), the radar-estimated precipitation was mostly substantially smaller than measured precipitation. The underestimation was smaller at lower altitude (on average by –4% to –17% at 815 m a.s.l.) than at higher altitudes (–35% to –59% at 1400–1900 m a.s.l.). Unlike measured data, the radar-estimated precipitation did not show the differences in precipitation amounts at lower and higher altitudes (altitudinal differences). The differences between the measured and radar-estimated precipitation were not related to synoptic weather situations. The obtained results can be useful in preparation of more accurate precipitation estimates for the small mountain catchments.
Publisher
Walter de Gruyter GmbH
Reference27 articles.
1. Abon, C.C., Kneis, D., Crisologo, I., Bronstert, A., David, C.P.C., Heistermann, M., 2016. Evaluating the potential of radar-based rainfall estimates for streamflow and flood simulations in the Philippines. Geomat. Nat. Hazards Risk, 7, 1390–1405.10.1080/19475705.2015.1058862 2. Ballon, L., Forgáč, P., Molnár, F., 1964. Weather over the territory of Slovakia in typical weather situations. Hydrometeorologický ústav, Prague, 30 p. (In Slovak.) 3. Berne, A., ten Heggeler, M., Uijlenhoet, R., Delobbe, L., Dierickx, P. de Wit, M., 2005. A preliminary investigation of radar rainfall estimation in the Ardennes region and a first hydrological application for the Ourthe catchment. Nat. Hazards Earth Syst. Sci., 5, 267–274.10.5194/nhess-5-267-2005 4. Brádka, J., Dřevikovský, A., Gregor., Z., Kolesár, J., 1961. Weather over the territory of Bohemia and Moravia in typical weather situations. Hydrometeorologický ústav, Prague, 31 p. (In Czech.) 5. Danko, M., Holko, L., Kostka, Z., Tachecí, P., 2015a. Simulation of snow water equivalent, snowmelt rate and runoff in mountain catchment during winter period. Acta Hydrologica Slovaca, 16, 1, 42–50. (In Slovak.)
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